tests failed on clean install

OS: Arch Linux
Arch: x64
Kernel: Linux 6.18.2-arch2-1

Installed using yay.

[xUnit.net 00:00:00.85]     GitCredentialManager.Tests.GitConfigurationTests.GitConfiguration_Unset_Local_UnsetsLocalConfig [FAIL]
  Failed GitCredentialManager.Tests.GitConfigurationTests.GitConfiguration_Unset_Local_UnsetsLocalConfig [11 ms]
  Error Message:
   Assert.Equal() Failure: Values differ
Expected: 0
Actual:   255
  Stack Trace:
     at GitCredentialManager.Tests.GitTestUtilities.GitResult.AssertSuccess() in /home/guma/.cache/yay/git-credential-manager/src/git-credential-manager-2.6.1/src/shared/TestInfrastructure/GitTestUtilities.cs:line 109
   at GitCredentialManager.Tests.GitConfigurationTests.GitConfiguration_Unset_Local_UnsetsLocalConfig() in /home/guma/.cache/yay/git-credential-manager/src/git-credential-manager-2.6.1/src/shared/Core.Tests/GitConfigurationTests.cs:line 361
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
[xUnit.net 00:00:00.85]     GitCredentialManager.Tests.GitConfigurationTests.GitConfiguration_Unset_Global_UnsetsGlobalConfig [FAIL]
  Failed GitCredentialManager.Tests.GitConfigurationTests.GitConfiguration_Unset_Global_UnsetsGlobalConfig [6 ms]
  Error Message:
   Assert.Equal() Failure: Values differ
Expected: 0
Actual:   255
  Stack Trace:
     at GitCredentialManager.Tests.GitTestUtilities.GitResult.AssertSuccess() in /home/guma/.cache/yay/git-credential-manager/src/git-credential-manager-2.6.1/src/shared/TestInfrastructure/GitTestUtilities.cs:line 109
   at GitCredentialManager.Tests.GitConfigurationTests.GitConfiguration_Unset_Global_UnsetsGlobalConfig() in /home/guma/.cache/yay/git-credential-manager/src/git-credential-manager-2.6.1/src/shared/Core.Tests/GitConfigurationTests.cs:line 329
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)

Failed!  - Failed:     2, Passed:   794, Skipped:    43, Total:   839, Duration: 6 s - Core.Tests.dll (net8.0)

Start with the failing GitConfigurationTests.GitConfiguration_Unset_Local_UnsetsLocalConfig and GitConfiguration_Unset_Global_UnsetsGlobal tests in shared/Core.Tests/GitConfigurationTests.cs, then inspect GitTestUtilities.cs line 109. Reproduce the failures on a clean Arch Linux install and examine the Git result behind the exit code 255. Done means both tests pass without breaking the remaining Core.Tests suite.